I've been through all processing for the Airtivity clinical trial, and all good so far. Now the stumbling block for me is to produce a good sputum sample. Apparently I won't get on the trial if I cannot produce two good samples. I am not allowed to use hypertonic saline to induce one either. I'm not a good sputum producer, I even tried the Madison & Dale sputum collection method this morning. I'm drinking plenty as well. I can only get lots of little "good" bits, but I don't think collecting throughout the day into one pot is acceptable.

Any other suggestions please. What works for you?